Loom-shuttle.



No. 636,227. Patented Oct. 3|, 1899. S. M. HAMBLIN & W. H. GOLDSMITH.

(No Model.)

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UNITED STATES PATE nice.

STEPHEN M. HAMBLIN AND VVILLIAM I-I. GOLDSMITH, OF CENTRAL FALLS,

RHODE ISLAND.

LOOlVl-SHUTTLE.

SPECIFICATION forming part Of Letters Patent NO. 636,227, dated October 31, 1899. Application filed August 4, 1899. Serial No. 726,163. (No model.)

To all whom it may concern: 7 Be it known that we, STEPHEN M. HAMBLIN and WILLIAM H. GOLDSMITH, citizens of the United States, residing at Central Falls, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bobbin-Retaining Devices for Loom-Shuttle Spindles, of which the following is a specification, reference being had to therein to the accompanying drawings.

Our invention consists in a novel bobbinretaining device which is combined with the spindle of a loom-shuttleand is arranged to be actuated positively as the spindle is being t 5 lowered from an upraised position into its normal working position, the said bobbin-retaining device being caused thereby to lock in place a bobbin which was placed upon the spindle while the tip of the latter was upraised.

- In the practical embodiment of our invention we employ one or more catches, which are movably applied to the spindle and pro: ject therefrom. Usually we employ a plu- 2 5 rality of the said catches and arrange them at different sides of the spindle. When two such catches are employed, for instance, we place them opposite to each other. Preferably the said catches are in the form of arms, which 0 are connected pivotally with the spindle, so

that the bobbin-engaging portions thereof may swing out and in relatively to the spindle. For the purpose of actuating the said catch or catches we provide a device which weterman expander. The latter is mounted movably on the spindle and itself is operated positively by the closing movement of the spindle-4. e., the swinging movement by which the tip of the spindle after being upraised from the shuttle-cavity is swung back into the latter again. By such positive operation of the expander it is caused to force the catch or catches outward in to engagement with the bobbin. As the spindle-tip is swung 5 out of the shuttle-cavity again the expander moves in the reverse direction on the spindle and the disengagement of the catch or catches from the bobbin occurs, thereby releasing the latter and leaving it free to be removed from the spindle and replaced by another one.

In the preferred embodiment of the invention the expander is made tapering, it consistin g, essentially, of a wedge or cone mounted on the spindle with capacity to slide lengthwise of the latter. One or more fixed bear- 5 5 ings with which the shuttle is provided are arranged to cooperate with the said expander. As the spindle-tip is lowered from an upraised position the said bearings'oper'ate to move the expander outward along the spindle,thereby actuating the catch or catches to place the latter in operative position. As the spindletip is uplifted from the shuttle-cavity the expander will move reversely on the spindle and the catch or catches will resume their inoperative positions, freeing the bobbin.

We have illustrated the preferred embodiment of the invention in the accompanying drawings, in which- Figure 1 shows in plan a loom-shuttle containing the said embodiment of the invention. Fig. 2 is a sectional representation, on an enlarged scale, on the dotted line 2 2 of Fig. 1, only a portion of the length of the shuttlebody beingshown and a part of the spindle being broken away. Fig. 3 is a partial plan view of a shuttle having the said embodiment of the invention applied thereto, a bobbin in horizontal section being shown in this figure. Fig. 4 is a partly-sectional representation of the spindle and bobbin-retaining device.

The shuttle-body is designated 1.

2 is the shuttle-spindle.

3, Fig. 3, is a bobbin in place upon the shuttle-spindle 2. The bore of the bobbin is enlarged in customary manner, as at 31, at the head or base of the bobbin, this enlargement or cavity serving to receive the bobbin-retaining deVice.

32 is an internal shoulder that is formed at the head or base end of the bobbin for engagement by the catch or catches on the shut tle-spindle.

4 4 designate the two oppositely-located catches which are employed in the present 95 instance. The said catches are mounted pivsleeve or ring 43.

. surrounds spindle 2 and is secured in place on the same in suitable manner, as by being brazed thereto. Each catch is pivoted between a pair of the lugs 42. The catches extend from their pivots toward the head 21 of the spindle, the free end of each thereof being turned outward at an angle, as shown, to form a bobbin-engaging portion.

The expander, herein designated 5, is shown in the form of a cone, it being mounted upon the spindle 2 and being free to slide a short distance along the spindle. The catches 4 4 are acted upon by the inclined exterior of this cone. At its base the cone is formed or provided with a circular flange 51, while to the butt-end of the expander is applied the disk 52, exceeding the said flange in diameter. The small end of the expander is furnished with a flange 53, having opposite holes or slots 54 54, through which the arms of the catches 4 4 pass. A tapering shell 6, corresponding somewhat in exterior form with the cavity 31 in the head or base end of the bobbin 3, is connected with the spindle, as by being brazed at its small end to the sleeve or ring 43. This shell incloses the catches 4 4, the free ends of which work through slots at 61 61 in the shell. hen the catches are moved outward by the action of the expander, the free or engaging ends thereof project beyond the periphery of the shell. At other times they are retracted within the shell, so that they do not constitute obstructions to interfere with the operation of applying a bobbin to the spindle 2. The expander moves within the large open end of the shell, the said end fitting substantially the periphery of the flange 51 of the expander and being supported by the said flange.

The bearings which are provided in the shuttle to coact with the expander are shown at 7 7. They are constituted by projecting portions of the material of theshuttle-body 1 adjacent to the pivot 8 for the spindle. These projecting portions or bearings are shaped and located as shown, so that when the tip of the spindle is depressed from an uplifted position into the shuttle-cavity the movement of the spindle will press the disk 52, carried by the expander, against the said bearings, and the latter will act to crowd the expander along the spindle away from the pivot of the latter, thereby expanding the catches 4 4. The upper portions of the bearings 7 7 are rounded away, so that when the shuttle-tip is raised out of the shuttle-cavity the expander will be relieved of pressure and will be allowed to drop by gravity slightly toward the pivot of the spindle. As the expander thus drops, the slotted flange 53 will act to draw inward the catches 4 4. In the expanded positions of the catches (shown in Figs. 1 and 3) the engaging portions of the catches project beyond the shell 6 far enough to engage with the internal shoulder 32 of the bobbin. By this engagement the bobbin will be held with the extreme end of its head or base in contact with disk 52, and thereby endwise movement of the bobbin upon the spindle while the shuttle is in use will be prevented. The retracted position of the catches is illustrated in Fig. 4.

It is to be understood that the precise details of construction described herein are not essential to the invention and may be departed from in some instances.

We claim as our invention- 1. In a loom-shuttle, in combination, the shuttle-body, the pivoted shuttle-spindle, one or more catches movably applied to the shuttle-spindle and fitted for engagement with the interior of a bobbin placed on the shuttlespindle, a movable expander operatingin connection with the said catch or catches, and means for operating the said expander as the shuttle-spindle is depressed into the shuttlecavity,substantially as described.

2. In a loom-shuttle, in combination, the shuttle-body, the pivoted shuttle-spindle, one or more catches movablyapplied to the shuttle-spindle and fitted for engagement with the interior of a bobbin placed on the shuttlespindle, a movable expander operating in connection with the said catch or catches and provided with means for retracting the catch or catches in the reverse movement of the expander, and means to operate the said expander as the shuttle-spindle is swung on its pivot, substantially as described.

3. In a loom-shuttle, in combination, the shuttle-body having one or more bearings such as described, the pivoted shuttle-spindle, one or more catches movably connected with the shuttle-spindle and fitted for en gagement with the interior of a bobbin placed on the shuttle-spindle, and an expander cooperating with the said catch or catches, movable lengthwise of the shuttle-spindle, and actuated by the said bearing or bearings as the shuttle-spindle is turned down into the shuttle-cavity, substantially as set forth.

4. In a loom-shuttle, in combination, the shuttle-body, the pivoted shuttle-spindle, one or more catches pivotally connected with the said sh uttle-spindle and fitted for engagement with the interior of a bobbin placed upon the shuttle-spindle, the expander having the flange slotted to receive the catch or catches, and means to move the expander lengthwise of the shuttle-spindle as the latter is turned on its pivot, substantially as described.

5. In a loom-shuttle, in combination, the shuttle-body having one or more bearings therein such as described, the pivoted shuttle-spindle, one or more catches pivotally connected with the shuttle-spindle and fitted for engagement with the interior of a bobbin placed upon the latter, and the expander mounted upon the shuttle-spindle, having the flange slotted to receive the catch or catches,- and operated by the said bearing or bearings as the shuttle-spindle is turned down into the shuttle-cavity, substantially as set forth.

6. In a loom-shuttle, in combination, the

4 shuttle-body provided with one or more bearings such as described, the pivoted shuttlespindle, the catch or catches pivotally connected with the shuttle-spindle and fitted for engagement with the interior of a bobbin placed upon the latter, the shell fixed upon the shuttle-spindle and slotted for the passage K therethrough of the extreme end or ends of l the catch or catches and the expander mov- 

